Get supersets from cell array of doubles
5 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I have a cell array of doubles, e.g.
C{1} = [1,2,3,4];
C{2} = [3,4,5,6,7,8];
C{3} = [2,3];
C{4} = [7,8,9,10];
C{5} = [1,2,6,7,8,9,10];
I want to find the indexes of arrays that are not fully contained within another array, so in this case, the code should return
[1,1,0,0,1]
I reckon some use of ismember is needed but I can't quite make out how.
1 Kommentar
dpb
am 21 Jan. 2021
Bearbeitet: dpb
am 21 Jan. 2021
I think you can only do that by testing each set with the combination of all other sets together.
ADDENDUM:
On thinking about it, I believe I'd be tempted to put the whole mess into a 2D array with the data in one column and the cell number in the second. Then a grouping variable could be used to operate by what is now cell.
Akzeptierte Antwort
dpb
am 21 Jan. 2021
Bearbeitet: dpb
am 21 Jan. 2021
I misread the problem statement originally and the second idea didn't really help all that much. It's fairly straightforward, though...
res=false(numel(C));
for i=1:numel(C)
isOK=false;
for j=setdiff(1:numel(C),i)
isOK=isOK|all(ismember(C{i},C{j}));
end
res(i)=~isOK;
end
For the sample array above produces
>> res
res =
1×5 logical array
0 0 1 1 0
>> res=~res
res =
1×5 logical array
1 1 0 0 1
>>
before incorporating the not operator inside the loop over i ...did it that way to debug more easily. One could change the sense of the return from all at that point instead; your call.
0 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Creating and Concatenating Matrices finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!